12″ x 25′ Voluvent Vacuum Hose. 12″ Voluvent Vacuum Hose is polyvinyl chloride construction with a wire helix. The 10″ Voluvent Hose is extremely flexible and collapses laterally under vacuum. 12″ Voluvent Hose is ideal for use in duct cleaning application with electric HEPA vacuums such as the Electrak series. Connect 12″ Voluvent Hose to duct work with a Snap Adaptor or Tapered Starter Collar.